Gearbox shell oil pump installation via hole countersink surface roughness measuring device

Abstract

The utility model discloses a gearbox housing oil pump installation via hole countersink surface roughness measuring device comprising a housing, a roughness measuring instrument is assembled in the housing, the front end of the roughness measuring instrument is provided with a measuring head, the measuring head extends out from the front end of the housing, the tail part of the roughness measuring instrument is provided with a data line, and the data line is connected with the housing. The data line extends out from a sealing cover at the tail part of the shell, the bottom of the shell is provided with three positioning bosses, the three positioning bosses and mounting via hole countersinks on the gearbox shell support each other, two of the three positioning bosses are provided with positioning pins, the positioning pins are matched with or separated from mounting via holes on the gearbox shell, and the shell is provided with a mounting hole. And the measuring head is in contact with the surface of the mounting via hole countersink to be measured on the gearbox shell. The technical problem that the roughness of the mounting via hole countersink surface of the gearbox oil pump is not easy to measure in the prior art is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of surface roughness measurement, in particular to a device for measuring the roughness of a countersunk surface of an oil pump installation through a gearbox housing. Background Art

[0002] The oil pump is a critical component in an automatic transmission, and its technical condition significantly impacts the transmission's performance and service life. The oil pump is typically installed after the torque converter and bolted to the transmission's front face. The surface roughness of the oil pump mounting countersunk ... If dedicated automatic measuring equipment is used for detection, the cost is too high and the production cycle is long. In addition, automatic measuring equipment has high requirements on the use environment and the skill level of the operator, and it is not easy to meet the requirements of online measurement in production.

[0003] Therefore, how to develop a handheld transmission housing oil pump installation through-hole countersink surface roughness measurement device that can effectively find the measurement position and is simple and quick to operate is a difficult problem that technicians in this field have been thinking about. Utility Model Content

[0004] The purpose of the utility model is to provide a device for measuring the roughness of the countersunk surface of the transmission housing oil pump installation hole, so as to solve the technical problem that the roughness of the countersunk surface of the transmission housing oil pump installation hole is difficult to measure in the above-mentioned prior art.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A device for measuring the roughness of a transmission housing oil pump mounting through-hole countersink, comprising: a housing, a roughness measuring instrument assembled inside the housing, a probe at the front end of the roughness measuring instrument, the probe extending from the front end of the housing, a data cable at the rear end of the roughness measuring instrument, the data cable extending from a cover at the rear end of the housing, three positioning bosses at the bottom of the housing, the three positioning bosses supporting the mounting through-hole countersink on the transmission housing, two of the three positioning bosses being equipped with positioning pins, the positioning pins being engaged with or separated from the mounting through-hole on the transmission housing, and the probe in contact with the surface of the mounting through-hole countersink to be measured on the transmission housing.

[0007] The utility model provides a device for measuring the roughness of a countersunk surface of a transmission housing oil pump installation through a hole, wherein the locating pin comprises a first locating pin and a second locating pin, the first locating pin is a diamond locating pin, and the second locating pin is a cylindrical locating pin.

[0008] The utility model provides a gearbox housing oil pump installation through-hole countersunk surface roughness measuring device, wherein the end portions of the first locating pin and the second locating pin are circumferentially provided with guide cone surfaces, so that they can smoothly enter the hole during measurement.

[0009] The utility model provides a device for measuring the roughness of a countersunk surface of a transmission housing oil pump installation through a hole, wherein the bottoms of the first locating pin and the second locating pin are both equipped with anti-collision pins.

[0010] The utility model provides a gearbox housing oil pump installation through-hole countersink surface roughness measuring device, wherein the anti-collision pin is made of non-metallic material to prevent the positioning pin from damaging the workpiece surface and inner hole when being inserted.

[0011] The utility model provides a roughness measuring device for a transmission case oil pump installation through-hole countersink. A probe protection cover is provided on the outside of the probe, and the probe protection cover is fixedly connected to a roughness measuring instrument.

[0012] The utility model provides a device for measuring the roughness of a through-hole countersunk table for mounting an oil pump on a transmission housing. The measuring device is calibrated by a calibration seat. The calibration seat includes a calibration seat body. The calibration seat body is provided with a calibration sample block and a positioning hole. The calibration sample block corresponds to the position of the probe, and the positioning hole corresponds to the position of the positioning pin.

[0013] The beneficial effects of the present invention are as follows: a roughness measuring device for the countersunk surface of the oil pump mounting hole of a transmission case is proposed, wherein a one-side two-pin positioning structure is formed by the bottom surface of a positioning boss and two positioning pins. The positioning pins and the boss surface on the roughness measuring device are used to position the workpiece to be measured to fix the measurement position, thereby solving the problem of the difficulty in placing the roughness measuring instrument on the front face of the transmission case and finding the accurate measurement position for the stylus of the probe. During measurement, the roughness measuring device only needs to be calibrated on the calibration seat first; then the measuring device is directly placed on the front face of the transmission case, and the positioning pin is placed in the selected oil pump mounting hole to quickly complete the positioning and start the roughness measurement. The operation is simple and quick, which reduces the operator's measurement skill requirements and greatly improves the efficiency of manual roughness detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0015] Figure 1 It is a schematic diagram of an embodiment of the utility model;

[0016] Figure 2 It is a cross-sectional view of an embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of a calibration base according to an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the calibration state of an embodiment of the present utility model;

[0019] Figure 5 It is a schematic diagram of the measurement state of an embodiment of the present utility model. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, rather than all the embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] like Figure 1-5As shown, a roughness measuring device for the surface of a transmission housing oil pump mounting through-hole countersunk table comprises: a housing 100, wherein a roughness measuring instrument 200 is assembled inside the housing 100, wherein a probe 210 is provided at the front end of the roughness measuring instrument 200, wherein the probe 210 extends from the front end of the housing 100, and a data line 220 is provided at the rear end of the roughness measuring instrument 200, wherein the data line 220 extends from a cover 120 at the rear end of the housing 100, and wherein three positioning bosses 130 are provided at the bottom of the housing 100, wherein the three positioning bosses 130 are supported by the mounting through-hole countersunk table on the transmission housing 400, and wherein two of the three positioning bosses 130 are provided with positioning pins, wherein the positioning pins cooperate with or separate from the mounting through-hole on the transmission housing 400, and the probe 210 contacts the surface of the mounting through-hole countersunk table to be measured on the transmission housing 400.

[0022] It should be noted that a positioning hole is made inside the housing 100 for installing the driver of the roughness measuring instrument; the cover 120 is installed on the right side of the main body of the housing 100 by screws.

[0023] In a preferred embodiment of the present invention, the positioning pin includes a first positioning pin 131 and a second positioning pin 132 . The first positioning pin 131 is a diamond-shaped positioning pin, and the second positioning pin 132 is a cylindrical positioning pin.

[0024] In a preferred embodiment of the present invention, a guide conical surface 133 is provided on the circumference of the end of each of the first positioning pin 131 and the second positioning pin 132 .

[0025] In a preferred embodiment of the present invention, anti-collision pins 134 are installed at the bottom of the first positioning pin 131 and the second positioning pin 132 .

[0026] In a preferred embodiment of the present invention, the anti-collision pin 134 is made of non-metallic material.

[0027] In a preferred embodiment of the present invention, a probe protection cover 110 is provided outside the probe 210 , and the probe protection cover 110 is fixedly connected to the roughness measuring instrument 200 .

[0028] In a preferred embodiment of the present invention, the measuring device is calibrated through a calibration seat 300, and the calibration seat 300 includes a calibration seat body 330, and the calibration seat body 330 is provided with a calibration sample block 310 and a positioning hole 320, the calibration sample block 310 corresponds to the position of the probe 210, and the positioning hole 320 corresponds to the position of the positioning pin.

[0029] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified or limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0031] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. A device for measuring the roughness of the countersunk surface of a transmission housing oil pump installation hole, characterized in that: include: A housing (100) is provided with a roughness measuring instrument (200) inside the housing (100), a probe (210) is provided at the front end of the roughness measuring instrument (200), the probe (210) extends from the front end of the housing (100), a data line (220) is provided at the rear end of the roughness measuring instrument (200), the data line (220) extends from a cover (120) at the rear end of the housing (100), three positioning bosses (130) are provided at the bottom of the housing (100), the three positioning bosses (130) are supported by a mounting through-hole sink on a gearbox housing (400), two of the three positioning bosses (130) are provided with positioning pins, the positioning pins are matched with or separated from the mounting through-hole on the gearbox housing (400), and the probe (210) contacts the surface of the mounting through-hole sink to be measured on the gearbox housing (400).

2. The device for measuring the roughness of the countersunk surface of the transmission housing oil pump installation through hole according to claim 1, characterized in that: The positioning pin comprises a first positioning pin (131) and a second positioning pin (132), wherein the first positioning pin (131) is a diamond-shaped positioning pin, and the second positioning pin (132) is a cylindrical positioning pin.

3. The roughness measuring device for the countersunk surface of a transmission housing oil pump installation through hole according to claim 2, characterized in that: The ends of the first positioning pin (131) and the second positioning pin (132) are both provided with guide conical surfaces (133) in the circumferential direction.

4. The roughness measuring device for the countersunk surface of a transmission housing oil pump installation through hole according to claim 2, characterized in that: The bottoms of the first positioning pin (131) and the second positioning pin (132) are both equipped with anti-collision pins (134).

5. The device for measuring the roughness of the countersunk surface of the transmission housing oil pump installation through hole according to claim 4, characterized in that: The anti-collision pin (134) is made of a non-metallic material.

6. The device for measuring the roughness of the countersunk surface of the transmission housing oil pump installation through hole according to claim 1, characterized in that: A probe protection cover (110) is provided outside the probe (210), and the probe protection cover (110) is fixedly connected to the roughness measuring instrument (200).

7. The device for measuring the roughness of the countersunk surface of the transmission housing oil pump installation through hole according to claim 1, characterized in that: The measuring device is calibrated via a calibration seat (300), wherein the calibration seat (300) comprises a calibration seat body (330), wherein the calibration seat body (330) is provided with a calibration sample block (310) and a positioning hole (320), wherein the calibration sample block (310) corresponds to the position of the probe (210), and the positioning hole (320) corresponds to the position of the positioning pin.

Images